2164766394 has 144 divisors (see below), whose sum is σ = 5446828800. Its totient is φ = 571253760.

The previous prime is 2164766369. The next prime is 2164766411. The reversal of 2164766394 is 4936674612.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4821082 + ... + 4821530.

It is an arithmetic number, because the mean of its divisors is an integer number (37825200).

Almost surely, 2^2164766394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2164766394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2723414400).

2164766394 is an abundant number, since it is smaller than the sum of its proper divisors (3282062406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2164766394 is a wasteful number, since it uses less digits than its factorization.

2164766394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 515 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 48.

The square root of 2164766394 is about 46527.0501321543. The cubic root of 2164766394 is about 1293.6109381396.

The spelling of 2164766394 in words is "two billion, one hundred sixty-four million, seven hundred sixty-six thousand, three hundred ninety-four".